openbios/openboot/obp/pkg/dropins/sparc/find-dropin.fth

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• Hash : 1a08f436
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  Date : 2010-08-25T09:23:17
  

  change to well-formed svn directory structure. git-svn-id: svn://coreboot.org/openboot/trunk@2 4486e004-3823-0410-90c7-fb508cc143bb

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• obp/pkg/dropins/sparc/find-dropin.fth

• \ ========== Copyright Header Begin ==========================================
  \ 
  \ Hypervisor Software File: find-dropin.fth
  \ 
  \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
  \ 
  \  - Do no alter or remove copyright notices
  \ 
  \  - Redistribution and use of this software in source and binary forms, with 
  \    or without modification, are permitted provided that the following 
  \    conditions are met: 
  \ 
  \  - Redistribution of source code must retain the above copyright notice, 
  \    this list of conditions and the following disclaimer.
  \ 
  \  - Redistribution in binary form must reproduce the above copyright notice,
  \    this list of conditions and the following disclaimer in the
  \    documentation and/or other materials provided with the distribution. 
  \ 
  \    Neither the name of Sun Microsystems, Inc. or the names of contributors 
  \ may be used to endorse or promote products derived from this software 
  \ without specific prior written permission. 
  \ 
  \     This software is provided "AS IS," without a warranty of any kind. 
  \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 
  \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 
  \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN 
  \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR 
  \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR 
  \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN 
  \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR 
  \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE 
  \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, 
  \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF 
  \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  \ 
  \ You acknowledge that this software is not designed, licensed or
  \ intended for use in the design, construction, operation or maintenance of
  \ any nuclear facility. 
  \ 
  \ ========== Copyright Header End ============================================
  id: @(#)find-dropin.fth 1.1 02/08/22
  purpose: 
  copyright: Copyright 1999-2002 Sun Microsystems, Inc.  All Rights Reserved
  copyright: Use is subject to license terms.
  
  inline-struct? on
  struct
     /l field >di-magic
     /l field >di-size
     /l field >di-sum
     /l field >di-exp  \ Reserved
  d# 16 field >di-name
      0 field >di-image
  constant /lvl1-hdr
  inline-struct? off
  
  [ifdef] dropin-debug?
  label di-print-addr
     %l5			%o0	move
     %g0  %g0		%g0	save
     print" "r"nScan addr: "
     %i0				print-reg
     %i7  8			return
     nop
  end-code
  
  label di-print-name
     %g0  %g0		%g0	save
     ttya-pa %o2		%l7	setx
  
     %l7			%o1	move
     bpemit			call
     ascii [		%o0	move		\ (delay)
  
     %l7			%o1	move
     bpemit			call
     %i2			%o0	move		\ (delay)
  
     %l7			%o1	move
     bpemit			call
     ascii !		%o0	move		\ (delay)
  
     %l7			%o1	move
     bpemit			call
     %i3			%o0	move		\ (delay)
  
     %l7			%o1	move
     bpemit			call
     ascii ]		%o0	move		\ (delay)
  
     %i7  8			return
     nop
  end-code
  [then]
  
  \ In
  \   %o0 = di-name
  \   %o1 = start-addr
  \ Out
  \   %o0 = addr of dropin-header or 0 if not found.
  label find-drop-in
     %g0  %g0		%g0	save
  
     %i1			%l5	move		\ start address
     h# 4f424d44		%l6	set		\ dropin magic
     %g0  %g0		%l7	add		\ found address
     begin
        \ Skip trailing 01 bytes.
        begin
           %l5  0 	%o0	ldub
           %o0  h# 01	%g0	subcc
        0<> until
           %l5  1		%l5	add
        %l5  3		%l5	andn		\ Force alignment
  [ifdef] dropin-debug?
        di-print-addr		call	nop
  [then]
        %l5  0 >di-magic	%l4	ld		\ get magic
        %l5  0 >di-size	%l1	ld		\ get size
        %l4  %l6		%g0	subcc
        0= if
           %g0  %g0	%g0	subcc		\ (delay) mark exit
  
           \ Check the name
           %l5  0 >di-name %o0	add		\ Dropin name
           %i0  %g0	%o1	add		\ SRC name
           %g0  d# 16	%o4	add		\ max len.
           begin
              %o0  0	%o2	ldub
              %o1  0	%o3	ldub
  [ifdef] dropin-debug?
              di-print-name	call	nop
  [then]
              %o2  %o3	%g0	subcc
              0= if
                 %g0  %g0  %g0	subcc		\ (delay) no match exit
                 %o2  %g0  %g0	subcc
                 0= if
                    %o4 1	%o4	subcc		\ decr and continue (delay)
                    %l5	%l7	move		\ name matched.
                    %g0  %g0  %g0	subcc		\ force exit.
                 then
              then
              %o0  1	%o0	add
           0= until
  	    %o1  1	%o1	add
  
           %l7  %g0	%g0	subcc		\ name matched?
           0<> if
              %g0  1	%g0	subcc		\ continue
              %g0  %g0	%g0	subcc		\ End
           then
        then
        %l5  /lvl1-hdr	%l5	add		\ Skip the header.
     0= until
        %l5  %l1		%l5	add		\ Skip the data to next dropin.
  
     %l7	%g0		%i0	add
     %i7  8			return
     nop      
  end-code
  

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